<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>{{a}}<br>{{b}}<br>{{c}}</div>

<script src="vue.min.js"></script>
<script>
    let v=new Vue({
        el:"div",
        data:{
            a:"hello vue!",
            b:"hello world!",
            c:"hello 莫菲特"
        }
    })

    setTimeout(function () {
        v.a="没变";
        v.b="变了";
        v.c="熔岩巨兽";
    },3000)

</script>

</body>
</html>